Assembly - Yamaha YQ50 Service Manual

CARB
CARBURETOR
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Float height measurement steps :
• Install the needle valve, float and float pin into
the carburetor body.
• Hold the carburetor upside down.
• Measure the height distance between the mating
surface of the float chamber (gasket removed)
and the top of the float, using a gauge.
NOTE:
The float arm should be resting on the needle
valve. It should not compress the needle valve.
• If the float height is not within specification,
inspect the needle valve, float and valve seat.
• If one of these parts is worn, replace the whole
set.
• If both parts are in good condition, replace the
float.
• Check the float height again.
********************************************************
NOTE:
The float height is factory-adjusted. Never try to
adjust it yourself.

ASSEMBLY

Reverse the "DISASSEMBLY" procedures. Note
the following points.
CAUTION:
• Before reassembling the carburetor wash
all its components in clean gasoline.
• Always use new gaskets.
1. Install :
• Needle W
• Clip E
• Throttle valve Q
• Spring seat R
• Spring
Jet needle clip position :
See specifications on Chapter 2
322018
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